./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_32_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_32_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a67dfe12a06fcc3adbf0bdb1b0af5b35df847c39990a2d3b73030372bad85c3d --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 12:40:03,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 12:40:03,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-03-04 12:40:03,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 12:40:03,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 12:40:03,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 12:40:03,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 12:40:03,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 12:40:03,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 12:40:03,514 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 12:40:03,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 12:40:03,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 12:40:03,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 12:40:03,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 12:40:03,515 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 12:40:03,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 12:40:03,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 12:40:03,516 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 12:40:03,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 12:40:03,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 12:40:03,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 12:40:03,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 12:40:03,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 12:40:03,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 12:40:03,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 12:40:03,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 12:40:03,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 12:40:03,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 12:40:03,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 12:40:03,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 12:40:03,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 12:40:03,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 12:40:03,518 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a67dfe12a06fcc3adbf0bdb1b0af5b35df847c39990a2d3b73030372bad85c3d [2025-03-04 12:40:03,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 12:40:03,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 12:40:03,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 12:40:03,743 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 12:40:03,743 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 12:40:03,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_32_bad.i [2025-03-04 12:40:04,851 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6aebc155/a2b71c49d85b40abb368f59da4de50dc/FLAGc114c5136 [2025-03-04 12:40:05,257 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 12:40:05,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_32_bad.i [2025-03-04 12:40:05,277 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6aebc155/a2b71c49d85b40abb368f59da4de50dc/FLAGc114c5136 [2025-03-04 12:40:05,420 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6aebc155/a2b71c49d85b40abb368f59da4de50dc [2025-03-04 12:40:05,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 12:40:05,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 12:40:05,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 12:40:05,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 12:40:05,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 12:40:05,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 12:40:05" (1/1) ... [2025-03-04 12:40:05,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba7706c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:05, skipping insertion in model container [2025-03-04 12:40:05,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 12:40:05" (1/1) ... [2025-03-04 12:40:05,463 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 12:40:06,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 12:40:06,170 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 12:40:06,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 12:40:06,417 INFO L204 MainTranslator]: Completed translation [2025-03-04 12:40:06,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06 WrapperNode [2025-03-04 12:40:06,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 12:40:06,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 12:40:06,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 12:40:06,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 12:40:06,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,453 INFO L138 Inliner]: procedures = 936, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2025-03-04 12:40:06,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 12:40:06,454 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 12:40:06,454 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 12:40:06,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 12:40:06,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,470 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [1, 4]. 80 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 2 writes are split as follows [0, 2]. [2025-03-04 12:40:06,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,474 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 12:40:06,478 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 12:40:06,478 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 12:40:06,478 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 12:40:06,478 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (1/1) ... [2025-03-04 12:40:06,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 12:40:06,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 12:40:06,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 12:40:06,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 12:40:06,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-03-04 12:40:06,521 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 12:40:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 12:40:06,631 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 12:40:06,633 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 12:40:06,743 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-03-04 12:40:06,743 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 12:40:06,752 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 12:40:06,754 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 12:40:06,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:40:06 BoogieIcfgContainer [2025-03-04 12:40:06,754 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 12:40:06,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 12:40:06,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 12:40:06,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 12:40:06,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 12:40:05" (1/3) ... [2025-03-04 12:40:06,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1d429b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 12:40:06, skipping insertion in model container [2025-03-04 12:40:06,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:06" (2/3) ... [2025-03-04 12:40:06,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1d429b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 12:40:06, skipping insertion in model container [2025-03-04 12:40:06,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:40:06" (3/3) ... [2025-03-04 12:40:06,763 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_square_32_bad.i [2025-03-04 12:40:06,774 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 12:40:06,776 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE190_Integer_Overflow__int_fgets_square_32_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 12:40:06,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 12:40:06,815 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e3a749d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 12:40:06,816 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 12:40:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 12:40:06,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 12:40:06,821 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 12:40:06,822 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 12:40:06,822 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-04 12:40:06,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 12:40:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash -841172690, now seen corresponding path program 1 times [2025-03-04 12:40:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 12:40:06,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754316724] [2025-03-04 12:40:06,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 12:40:06,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 12:40:06,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 12:40:06,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 12:40:06,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 12:40:06,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 12:40:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 12:40:06,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 12:40:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754316724] [2025-03-04 12:40:06,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754316724] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 12:40:06,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 12:40:06,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 12:40:06,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163927089] [2025-03-04 12:40:06,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 12:40:06,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 12:40:06,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 12:40:06,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 12:40:06,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 12:40:06,993 INFO L87 Difference]: Start difference. First operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 1 states have (on average 9.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 12:40:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 12:40:07,000 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2025-03-04 12:40:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 12:40:07,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 9.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-03-04 12:40:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 12:40:07,004 INFO L225 Difference]: With dead ends: 22 [2025-03-04 12:40:07,005 INFO L226 Difference]: Without dead ends: 14 [2025-03-04 12:40:07,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 12:40:07,008 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 12:40:07,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 12:40:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-04 12:40:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-04 12:40:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 12:40:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-04 12:40:07,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2025-03-04 12:40:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 12:40:07,029 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-04 12:40:07,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 9.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 12:40:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-04 12:40:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 12:40:07,030 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 12:40:07,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 12:40:07,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 12:40:07,030 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-04 12:40:07,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 12:40:07,031 INFO L85 PathProgramCache]: Analyzing trace with hash -306549634, now seen corresponding path program 1 times [2025-03-04 12:40:07,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 12:40:07,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246554916] [2025-03-04 12:40:07,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 12:40:07,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 12:40:07,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 12:40:07,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 12:40:07,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 12:40:07,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 12:40:07,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305297220] [2025-03-04 12:40:07,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 12:40:07,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 12:40:07,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 12:40:07,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 12:40:07,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 12:40:07,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 12:40:07,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 12:40:07,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 12:40:07,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 12:40:07,212 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 12:40:07,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 12:40:07,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 12:40:07,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 12:40:07,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 12:40:07,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 12:40:07,265 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 12:40:07,266 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-03-04 12:40:07,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-03-04 12:40:07,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 12:40:07,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 12:40:07,473 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 12:40:07,490 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 12:40:07,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 12:40:07 BoogieIcfgContainer [2025-03-04 12:40:07,492 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 12:40:07,493 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 12:40:07,493 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 12:40:07,493 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 12:40:07,494 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:40:06" (3/4) ... [2025-03-04 12:40:07,495 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 12:40:07,496 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 12:40:07,496 INFO L158 Benchmark]: Toolchain (without parser) took 2072.71ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 100.0MB in the end (delta: 8.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2025-03-04 12:40:07,496 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 12:40:07,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 993.11ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 107.5MB in the end (delta: 1.4MB). Peak memory consumption was 92.5MB. Max. memory is 16.1GB. [2025-03-04 12:40:07,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.17ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 103.7MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 12:40:07,497 INFO L158 Benchmark]: Boogie Preprocessor took 23.27ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 101.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 12:40:07,497 INFO L158 Benchmark]: IcfgBuilder took 276.56ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 89.0MB in the end (delta: 12.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 12:40:07,497 INFO L158 Benchmark]: TraceAbstraction took 736.66ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 100.1MB in the end (delta: -12.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 12:40:07,497 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 100.0MB in the end (delta: 13.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 12:40:07,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 993.11ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 107.5MB in the end (delta: 1.4MB). Peak memory consumption was 92.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.17ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 103.7MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.27ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 101.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 276.56ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 89.0MB in the end (delta: 12.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 736.66ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 100.1MB in the end (delta: -12.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 100.0MB in the end (delta: 13.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1856]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1844, overapproximation of fgets at line 1842. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1864] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1864] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1865] CALL CWE190_Integer_Overflow__int_fgets_square_32_bad() [L1834] int data; [L1835] int *dataPtr1 = &data; [L1836] int *dataPtr2 = &data; [L1837] data = 0 [L1839] EXPR \read(*dataPtr1) [L1839] int data = *dataPtr1; [L1841] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, dataPtr1={5:0}, dataPtr2={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1842] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1844] data = atoi(inputBuffer) [L1851] *dataPtr1 = data [L1854] EXPR \read(*dataPtr2) [L1854] int data = *dataPtr2; [L1856] data * data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1856]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-04 12:40:07,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_32_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a67dfe12a06fcc3adbf0bdb1b0af5b35df847c39990a2d3b73030372bad85c3d --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 12:40:09,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 12:40:09,351 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-03-04 12:40:09,363 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 12:40:09,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 12:40:09,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-03-04 12:40:09,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 12:40:09,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 12:40:09,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 12:40:09,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 12:40:09,386 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 12:40:09,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 12:40:09,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 12:40:09,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 12:40:09,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 12:40:09,387 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 12:40:09,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 12:40:09,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 12:40:09,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 12:40:09,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 12:40:09,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 12:40:09,388 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 12:40:09,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 12:40:09,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 12:40:09,389 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a67dfe12a06fcc3adbf0bdb1b0af5b35df847c39990a2d3b73030372bad85c3d [2025-03-04 12:40:09,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 12:40:09,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 12:40:09,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 12:40:09,627 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 12:40:09,628 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 12:40:09,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_32_bad.i [2025-03-04 12:40:10,754 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef68f938f/a0d01f203c0847eb857e850be104f9e8/FLAG04ccc562e [2025-03-04 12:40:11,055 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 12:40:11,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_32_bad.i [2025-03-04 12:40:11,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef68f938f/a0d01f203c0847eb857e850be104f9e8/FLAG04ccc562e [2025-03-04 12:40:11,331 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef68f938f/a0d01f203c0847eb857e850be104f9e8 [2025-03-04 12:40:11,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 12:40:11,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 12:40:11,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 12:40:11,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 12:40:11,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 12:40:11,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 12:40:11" (1/1) ... [2025-03-04 12:40:11,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a27d6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:11, skipping insertion in model container [2025-03-04 12:40:11,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 12:40:11" (1/1) ... [2025-03-04 12:40:11,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 12:40:12,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 12:40:12,111 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 12:40:12,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 12:40:12,437 INFO L204 MainTranslator]: Completed translation [2025-03-04 12:40:12,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12 WrapperNode [2025-03-04 12:40:12,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 12:40:12,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 12:40:12,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 12:40:12,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 12:40:12,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,475 INFO L138 Inliner]: procedures = 941, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2025-03-04 12:40:12,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 12:40:12,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 12:40:12,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 12:40:12,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 12:40:12,482 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,501 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [1, 4]. 80 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 2 writes are split as follows [0, 2]. [2025-03-04 12:40:12,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,515 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 12:40:12,526 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 12:40:12,526 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 12:40:12,526 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 12:40:12,527 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (1/1) ... [2025-03-04 12:40:12,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 12:40:12,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 12:40:12,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 12:40:12,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 12:40:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 12:40:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 12:40:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 12:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 12:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-03-04 12:40:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-03-04 12:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 12:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 12:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 12:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 12:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 12:40:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 12:40:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 12:40:12,706 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 12:40:12,707 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 12:40:13,520 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-03-04 12:40:13,520 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 12:40:13,526 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 12:40:13,527 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 12:40:13,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:40:13 BoogieIcfgContainer [2025-03-04 12:40:13,528 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 12:40:13,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 12:40:13,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 12:40:13,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 12:40:13,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 12:40:11" (1/3) ... [2025-03-04 12:40:13,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adaf0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 12:40:13, skipping insertion in model container [2025-03-04 12:40:13,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:40:12" (2/3) ... [2025-03-04 12:40:13,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adaf0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 12:40:13, skipping insertion in model container [2025-03-04 12:40:13,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:40:13" (3/3) ... [2025-03-04 12:40:13,536 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_square_32_bad.i [2025-03-04 12:40:13,546 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 12:40:13,547 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE190_Integer_Overflow__int_fgets_square_32_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 12:40:13,587 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 12:40:13,595 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3775798f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 12:40:13,595 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 12:40:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 12:40:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 12:40:13,602 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 12:40:13,602 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 12:40:13,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-04 12:40:13,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 12:40:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash -841172690, now seen corresponding path program 1 times [2025-03-04 12:40:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 12:40:13,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823711674] [2025-03-04 12:40:13,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 12:40:13,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 12:40:13,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 12:40:13,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 12:40:13,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 12:40:13,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 12:40:14,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 12:40:14,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 12:40:14,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 12:40:14,167 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 12:40:14,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 12:40:14,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 12:40:14,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 12:40:14,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 12:40:14,373 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-04 12:40:14,374 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 12:40:14,375 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-03-04 12:40:14,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-03-04 12:40:14,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 12:40:14,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 12:40:14,579 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 12:40:14,592 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 12:40:14,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 12:40:14 BoogieIcfgContainer [2025-03-04 12:40:14,594 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 12:40:14,595 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 12:40:14,595 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 12:40:14,595 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 12:40:14,595 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:40:13" (3/4) ... [2025-03-04 12:40:14,597 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 12:40:14,597 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 12:40:14,599 INFO L158 Benchmark]: Toolchain (without parser) took 3263.48ms. Allocated memory is still 117.4MB. Free memory was 88.1MB in the beginning and 47.7MB in the end (delta: 40.3MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2025-03-04 12:40:14,599 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 12:40:14,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1103.20ms. Allocated memory is still 117.4MB. Free memory was 87.9MB in the beginning and 38.8MB in the end (delta: 49.1MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2025-03-04 12:40:14,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.31ms. Allocated memory is still 117.4MB. Free memory was 38.8MB in the beginning and 35.1MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 12:40:14,602 INFO L158 Benchmark]: Boogie Preprocessor took 49.70ms. Allocated memory is still 117.4MB. Free memory was 35.1MB in the beginning and 83.3MB in the end (delta: -48.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 12:40:14,602 INFO L158 Benchmark]: IcfgBuilder took 1001.71ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 67.9MB in the end (delta: 15.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 12:40:14,602 INFO L158 Benchmark]: TraceAbstraction took 1064.83ms. Allocated memory is still 117.4MB. Free memory was 67.9MB in the beginning and 47.7MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 12:40:14,602 INFO L158 Benchmark]: Witness Printer took 2.75ms. Allocated memory is still 117.4MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 12:40:14,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1103.20ms. Allocated memory is still 117.4MB. Free memory was 87.9MB in the beginning and 38.8MB in the end (delta: 49.1MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.31ms. Allocated memory is still 117.4MB. Free memory was 38.8MB in the beginning and 35.1MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.70ms. Allocated memory is still 117.4MB. Free memory was 35.1MB in the beginning and 83.3MB in the end (delta: -48.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 1001.71ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 67.9MB in the end (delta: 15.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1064.83ms. Allocated memory is still 117.4MB. Free memory was 67.9MB in the beginning and 47.7MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.75ms. Allocated memory is still 117.4MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1856]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1844, overapproximation of fgets at line 1842. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1864] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1864] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1865] CALL CWE190_Integer_Overflow__int_fgets_square_32_bad() [L1834] int data; [L1835] int *dataPtr1 = &data; [L1836] int *dataPtr2 = &data; [L1837] data = 0 [L1839] EXPR \read(*dataPtr1) [L1839] int data = *dataPtr1; [L1841] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, dataPtr1={9007199254740993:0}, dataPtr2={9007199254740993:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1842] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1844] data = atoi(inputBuffer) [L1851] *dataPtr1 = data [L1854] EXPR \read(*dataPtr2) [L1854] int data = *dataPtr2; [L1856] data * data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1856]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-04 12:40:14,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample